The word chlorinating is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 22
Highest Scoring Words With Friends™ Plays In The Letters chlorinating
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Seven Letter Word Alert: (55 words)
alginic, alright, anionic, antlion, arching, atoning, cannoli, canting, carting, chagrin, chariot, chitlin, chlorin, choragi, choring, clangor, clarion, cloning, coaling, coating, coiling, coining, contain, corning, craning, crating, hailing, halting, haricot, hinting, ignitor, inching, ingrain, intagli, ironing, itching, lairing, lancing, lathing, loaning, nailing, nonliar, nothing, orating, organic, railing, raining, ranting, rioting, roaning, roiling, tailing, tinhorn, toiling, tracing